The Multiquip 2025167 is a genuine OEM Lock Washer 5/16 designed for MQ and STOW diaphragm pump models including MQ-D305, D306, MQ-D306HA, MQ-D206H, SDP-3, and SDP-2. As a direct OEM replacement, 2025167 meets the original engineering specifications for these pump assemblies, ensuring consistent fastener retention and secure hardware connections throughout the pump structure. Sourced directly through authorized Multiquip supply channels, this is the correct part to spec when servicing or reassembling your diaphragm pump.
Key Features
- OEM Hardened Spring Steel Construction — Built to the same material and dimensional spec as the original, providing the correct bite and tension needed to prevent fastener loosening under pump vibration cycles.
- Direct-Fit Installation — Sized specifically for 5/16 hardware used throughout the pump assembly, dropping into place without sizing adjustments or modification to mating fasteners.
- Broad Diaphragm Pump Compatibility — Confirmed fitment for MQ-D305, D306, MQ-D306HA, MQ-D206H, SDP-3, and SDP-2 diaphragm pump models.
- Vibration Resistance — The helical lock profile bites into mating surfaces to resist fastener back-out caused by the continuous vibration inherent in diaphragm pump operation.
- Genuine Multiquip OEM Part — Supplied as an original equipment component under part number 2025167, so you are replacing like-for-like rather than estimating a cross-reference.
A lock washer is a small but critical fastening component placed beneath a bolt or nut to prevent it from loosening due to vibration, torque, or thermal expansion and contraction. In a diaphragm pump, where the pumping action creates constant cyclic movement, fasteners without proper locking hardware can work themselves loose over time, leading to fluid leaks, misaligned components, or structural failure of the pump housing. Replacing a worn or damaged lock washer with the correct OEM specification part restores the integrity of the fastener joint and helps maintain the pump's operational reliability across demanding job conditions.
Part Details
| Part Number | 2025167 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Lock Washer 5/16 |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Diaphragm Pumps | MQ-D305 |
| MQ Diaphragm Pumps | D306 |
| MQ Diaphragm Pumps | MQ-D306HA |
| STOW Diaphragm Pumps | SDP-3 |
| STOW Diaphragm Pumps | CA90749 |
| MQ Diaphragm Pumps | MQ-D206H |
| STOW Diaphragm Pumps | SDP-2 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
